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tcg-ppc64: Allow constant first argument to sub

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Using SUBFIC for 16-bit signed constants.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-04-04 07:30:20 -07:00
parent ee924fa6b3
commit 148bdd2373
1 changed files with 17 additions and 4 deletions
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21
tcg/ppc64/tcg-target.c
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@ -329,6 +329,7 @@ static int tcg_target_const_match (tcg_target_long val,
#define MULLI OPCD( 7)
#define CMPLI OPCD( 10)
#define CMPI OPCD( 11)
#define SUBFIC OPCD( 8)
#define LWZU OPCD( 33)
#define STWU OPCD( 37)
@ -1314,7 +1315,13 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
break;
case INDEX_op_sub_i32:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
if (const_args[1]) {
if (const_args[2]) {
tcg_out_movi(s, TCG_TYPE_I32, a0, a1 - a2);
} else {
tcg_out32(s, SUBFIC | TAI(a0, a2, a1));
}
} else if (const_args[2]) {
a2 = -a2;
goto do_addi_32;
} else {
@ -1483,7 +1490,13 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args,
break;
case INDEX_op_sub_i64:
a0 = args[0], a1 = args[1], a2 = args[2];
if (const_args[2]) {
if (const_args[1]) {
if (const_args[2]) {
tcg_out_movi(s, TCG_TYPE_I64, a0, a1 - a2);
} else {
tcg_out32(s, SUBFIC | TAI(a0, a2, a1));
}
} else if (const_args[2]) {
a2 = -a2;
goto do_addi_64;
} else {
@ -1639,7 +1652,7 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_divu_i32, { "r", "r", "r" } },
{ INDEX_op_rem_i32, { "r", "r", "r" } },
{ INDEX_op_remu_i32, { "r", "r", "r" } },
{ INDEX_op_sub_i32, { "r", "r", "ri" } },
{ INDEX_op_sub_i32, { "r", "rI", "ri" } },
{ INDEX_op_and_i32, { "r", "r", "ri" } },
{ INDEX_op_or_i32, { "r", "r", "ri" } },
{ INDEX_op_xor_i32, { "r", "r", "ri" } },
@ -1655,7 +1668,7 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_not_i32, { "r", "r" } },
{ INDEX_op_add_i64, { "r", "r", "rT" } },
{ INDEX_op_sub_i64, { "r", "r", "rT" } },
{ INDEX_op_sub_i64, { "r", "rI", "rT" } },
{ INDEX_op_and_i64, { "r", "r", "rU" } },
{ INDEX_op_or_i64, { "r", "r", "rU" } },
{ INDEX_op_xor_i64, { "r", "r", "rU" } },